Bongs, or water pipes are glass smoking pieces that hold water to filter your smoke and make your hit much smoother than hitting a dry pipe. Bongs often have percolators, or percs which further this filtration process in many different ways. There are several types of bongs like gravity bongs, Beakers, Straight Tubes, recyclers and more! Bongs are good for first timers(Usually smaller ones) or long time smokers.